Add 42/15 and 4/18
1st number: 2 12/15, 2nd number: 4/18
42/15 + 4/18 is 136/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
42/15 = 42 × 6/15 × 6 = 252/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
4/18 = 4 × 5/18 × 5 = 20/90 - Add the two like fractions:
252/90 + 20/90 = 252 + 20/90 = 272/90 - 272/90 simplified gives 136/45
- So, 42/15 + 4/18 = 136/45
In mixed form: 31/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+4/18 42/15+8/18 42/30+4/18 42/15+4/36 42/15+12/18 42/45+4/18 42/15+4/54 42/15+20/18 42/75+4/18 42/15+4/90 42/15+28/18